#!/usr/bin/python3
# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import json
import atheris

from itsdangerous.serializer import Serializer


def TestOneInput(data):
  fdp = atheris.FuzzedDataProvider(data)

  secret_key = fdp.ConsumeUnicodeNoSurrogates(124)
  salt = fdp.ConsumeBytes(24)
  try:
    random_obj = json.loads(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
  except:
    return

  serializer = Serializer(secret_key = secret_key)
  signed = serializer.dumps(random_obj, salt=salt)
  assert serializer.loads(signed, salt=salt) == random_obj


def main():
  atheris.instrument_all()
  atheris.Setup(sys.argv, TestOneInput)
  atheris.Fuzz()


if __name__ == "__main__":
  main()
